71 lines
1.6 KiB
JavaScript
71 lines
1.6 KiB
JavaScript
const CACHE_NAME = 'mengyaping-shell-v1'
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const SHELL_FILES = [
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'/',
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'/index.html',
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'/manifest.webmanifest',
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'/favicon.ico',
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'/icons/icon-192.png',
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'/icons/icon-512.png',
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'/icons/icon-512-maskable.png',
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]
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches.open(CACHE_NAME).then((cache) => cache.addAll(SHELL_FILES))
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)
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self.skipWaiting()
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})
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self.addEventListener('activate', (event) => {
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event.waitUntil(
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caches.keys().then((cacheNames) =>
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Promise.all(
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cacheNames
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.filter((cacheName) => cacheName !== CACHE_NAME)
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.map((cacheName) => caches.delete(cacheName))
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)
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)
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)
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self.clients.claim()
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})
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self.addEventListener('fetch', (event) => {
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const { request } = event
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if (request.method !== 'GET') {
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return
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}
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const url = new URL(request.url)
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// Only cache same-origin requests, leave API calls untouched.
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if (url.origin !== self.location.origin) {
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return
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}
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if (request.mode === 'navigate') {
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event.respondWith(
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fetch(request).catch(() => caches.match('/index.html'))
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)
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return
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}
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event.respondWith(
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caches.match(request).then((cachedResponse) => {
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if (cachedResponse) {
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return cachedResponse
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}
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return fetch(request).then((networkResponse) => {
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if (!networkResponse || networkResponse.status !== 200) {
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return networkResponse
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}
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const responseClone = networkResponse.clone()
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caches.open(CACHE_NAME).then((cache) => cache.put(request, responseClone))
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return networkResponse
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})
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})
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)
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})
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